4HDO | pdb_00004hdo

Crystal structure of the binary Complex of KRIT1 bound to the Rap1 GTPase

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d4hdob_	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	Ras-like monodomain GTPases	8057487	4004043	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Ras-like P-loop GTPases	8057488	3002022	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Ras	e4hdoB1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Ras	ECOD (1.6)
A	FERM_C_CCM1	e4hdoA5	A: beta barrels	X: PH domain-like	H: PH domain-like (From Topology)	T: PH domain-like	F: FERM_C_CCM1	ECOD (1.6)
A	FERM_M	e4hdoA4	A: alpha bundles	X: Acyl-CoA binding protein-like (From Topology)	H: Acyl-CoA binding protein-like (From Topology)	T: Acyl-CoA binding protein-like	F: FERM_M	ECOD (1.6)
A	KOG4335	e4hdoA6	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: KOG4335	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.2.0)
A	3.10.20.90	Alpha Beta	Roll	Ubiquitin-like (UB roll)	Phosphatidylinositol 3-kinase Catalytic Subunit	CATH (4.2.0)
A	1.20.80.10	Mainly Alpha	Up-down Bundle	Acyl-CoA Binding Protein		CATH (4.2.0)
A	2.30.29.30	Mainly Beta	Roll	PH-domain like	Pleckstrin-homology domain (PH domain)/Phosphotyrosine-binding domain (PTB)	CATH (4.2.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF00071	Ras family (Ras)	Ras family	Includes sub-families Ras, Rab, Rac, Ral, Ran, Rap Ypt1 and more. Shares P-loop motif with GTP_EFTU, arf and myosin_head. See Pfam:PF00009 Pfam:PF00025, Pfam:PF00063. As regards Rab GTPases, these are important regulators of vesicle formation, motili ...	Includes sub-families Ras, Rab, Rac, Ral, Ran, Rap Ypt1 and more. Shares P-loop motif with GTP_EFTU, arf and myosin_head. See Pfam:PF00009 Pfam:PF00025, Pfam:PF00063. As regards Rab GTPases, these are important regulators of vesicle formation, motility and fusion. They share a fold in common with all Ras GTPases: this is a six-stranded beta-sheet surrounded by five alpha-helices [1].	Domain
A	PF24522	KRIT1/FRMD8, FERM domain C-lobe (KRIT1_FRMD8_FERM_C)	KRIT1/FRMD8, FERM domain C-lobe	KRIT1, also known as CCM1, a Rap1-binding protein, is expressed in endothelial cells where it is present in cell-cell junctions and associated with junctional proteins [1]. Together with CCM2/MGC4607 and CCM3/PDCD10, KRIT1 constitutes a set of protei ...	KRIT1, also known as CCM1, a Rap1-binding protein, is expressed in endothelial cells where it is present in cell-cell junctions and associated with junctional proteins [1]. Together with CCM2/MGC4607 and CCM3/PDCD10, KRIT1 constitutes a set of proteins whose mutations are found in cerebral cavernous malformations, characterised by cerebral hemorrhages and vascular malformations in the central nervous system. KRIT1 localization is mediated by its FERM domain [2]. This entry represents the FERM domain C-lobe. This entry also includes the paralogue of KRIT1, FRMD8, a protein that promotes the cell surface stability of iRhom1/RHBDF1 and iRhom2/RHBDF2 and prevents their degradation via the endolysosomal pathway. By acting on iRhoms, FRMD8 is involved in ADAM17-mediated shedding of TNF, amphiregulin/AREG, HBEGF and TGFA from the cell surface [3,4].	Domain
A	PF00373	FERM central domain (FERM_M)	FERM central domain	This domain is the central structural domain of the FERM domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Ras-related protein Rap-1b	binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding guanyl nucleotide binding GTP binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding GDP binding protein-containing complex binding pyrophosphatase activity GTPase activity G protein activity ribonucleoside triphosphate phosphatase activity molecular function regulator activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity	cellular component organization cell junction organization cellular process synapse organization cellular component organization or biogenesis modification of postsynaptic structure modification of synaptic structure regulation of localization regulated exocytosis regulation of cellular process synaptic vesicle cycle negative regulation of biological process synaptic vesicle exocytosis negative regulation of transport cellular component organization cell junction organization cellular process synapse organization cellular component organization or biogenesis modification of postsynaptic structure modification of synaptic structure regulation of localization regulated exocytosis regulation of cellular process synaptic vesicle cycle negative regulation of biological process synaptic vesicle exocytosis negative regulation of transport vesicle-mediated transport cell communication vesicle-mediated transport in synapse localization negative regulation of secretion establishment of localization in cell negative regulation of secretion by cell trans-synaptic signaling regulation of biological process neurotransmitter secretion regulation of synaptic vesicle exocytosis neurotransmitter transport establishment of localization negative regulation of synaptic vesicle exocytosis regulation of secretion signal release from synapse regulation of trans-synaptic signaling exocytosis cellular localization transport modulation of chemical synaptic transmission signaling negative regulation of regulated secretory pathway regulation of regulated secretory pathway synaptic signaling regulation of secretion by cell secretion by cell negative regulation of exocytosis signal release negative regulation of cellular process regulation of signaling regulation of transport secretion regulation of neurotransmitter transport biological regulation export from cell cell-cell signaling regulation of vesicle-mediated transport chemical synaptic transmission regulation of neurotransmitter secretion anterograde trans-synaptic signaling regulation of exocytosis regulation of cell communication cellular response to stimulus small GTPase-mediated signal transduction response to stimulus intracellular signal transduction intracellular signaling cassette signal transduction Rap protein signal transduction calcium-ion regulated exocytosis positive regulation of cell communication positive regulation of signal transduction positive regulation of biological process regulation of signal transduction positive regulation of response to stimulus positive regulation of ERK1 and ERK2 cascade regulation of intracellular signal transduction positive regulation of cellular process positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of response to stimulus MAPK cascade ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade positive regulation of signaling cell population proliferation cellular response to nitrogen compound response to organophosphorus response to oxygen-containing compound response to nitrogen compound response to purine-containing compound response to cAMP cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical cellular response to cAMP regulation of calcium ion-dependent exocytosis negative regulation of calcium ion-dependent exocytosis positive regulation of cellular component organization regulation of cellular component organization protein-containing complex organization positive regulation of cellular component biogenesis regulation of cellular component biogenesis cellular component biogenesis positive regulation of protein-containing complex assembly regulation of protein-containing complex assembly cellular component assembly protein-containing complex assembly regulation of integrin activation integrin activation positive regulation of integrin activation regulation of cell junction assembly cell junction assembly developmental process epithelium development endothelial cell differentiation cellular developmental process endothelium development cell development tissue development epithelial cell differentiation endothelial cell development epithelial cell development cell differentiation establishment of endothelial barrier anatomical structure development regulation of establishment of cell polarity regulation of establishment or maintenance of cell polarity establishment of cell polarity establishment or maintenance of cell polarity	cellular anatomical structure membrane cell-cell junction anchoring junction cell junction extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle cellular anatomical structure membrane cell-cell junction anchoring junction cell junction extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular anatomical structure intracellular vesicle lytic vacuole endomembrane system intracellular organelle bounding membrane of organelle vesicle membrane cytoplasmic vesicle lysosome vacuolar membrane azurophil granule vacuole intracellular membrane-bounded organelle lytic vacuole membrane cytoplasmic vesicle membrane lysosomal membrane secretory granule primary lysosome secretory vesicle azurophil granule membrane cytoplasm organelle membrane secretory granule membrane cytosol cell periphery plasma membrane synapse glutamatergic synapse lipid droplet membraneless organelle intracellular membraneless organelle
A	Krev interaction trapped protein 1	binding ion binding phosphatidylinositol-4,5-bisphosphate binding anion binding phosphatidylinositol bisphosphate binding phospholipid binding lipid binding phosphatidylinositol phosphate binding phosphatidylinositol binding small molecule binding cytoskeletal protein binding microtubule binding protein binding tubulin binding binding ion binding phosphatidylinositol-4,5-bisphosphate binding anion binding phosphatidylinositol bisphosphate binding phospholipid binding lipid binding phosphatidylinositol phosphate binding phosphatidylinositol binding small molecule binding cytoskeletal protein binding microtubule binding protein binding tubulin binding GTPase regulator activity enzyme regulator activity nucleoside-triphosphatase regulator activity molecular function regulator activity	developmental process multicellular organismal process regulation of multicellular organismal development regulation of biological process regulation of developmental process blood vessel morphogenesis tube development biological regulation angiogenesis vasculature development regulation of vasculature development circulatory system development anatomical structure morphogenesis multicellular organism development tube morphogenesis developmental process multicellular organismal process regulation of multicellular organismal development regulation of biological process regulation of developmental process blood vessel morphogenesis tube development biological regulation angiogenesis vasculature development regulation of vasculature development circulatory system development anatomical structure morphogenesis multicellular organism development tube morphogenesis regulation of angiogenesis anatomical structure formation involved in morphogenesis anatomical structure development regulation of multicellular organismal process regulation of anatomical structure morphogenesis blood vessel development system development cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process integrin activation cellular component organization or biogenesis cell redox homeostasis cellular homeostasis homeostatic process epithelium development endothelium development tissue development negative regulation of locomotion regulation of cell motility regulation of cellular process endothelial cell migration negative regulation of biological process negative regulation of endothelial cell migration regulation of locomotion regulation of cell migration negative regulation of cellular process regulation of endothelial cell migration negative regulation of cell motility cell migration cell motility locomotion negative regulation of cell migration negative regulation of blood vessel morphogenesis negative regulation of developmental process negative regulation of angiogenesis negative regulation of vasculature development negative regulation of multicellular organismal process negative regulation of endothelial cell apoptotic process negative regulation of programmed cell death regulation of apoptotic process regulation of programmed cell death cell death negative regulation of apoptotic process endothelial cell apoptotic process apoptotic process programmed cell death regulation of endothelial cell apoptotic process negative regulation of cell population proliferation cell population proliferation endothelial cell proliferation negative regulation of endothelial cell proliferation regulation of endothelial cell proliferation regulation of cell population proliferation regulation of epithelial cell proliferation epithelial cell proliferation negative regulation of epithelial cell proliferation regulation of establishment of cell polarity regulation of establishment or maintenance of cell polarity establishment of cell polarity establishment or maintenance of cell polarity cellular response to stimulus small GTPase-mediated signal transduction response to stimulus signaling intracellular signal transduction cell communication intracellular signaling cassette signal transduction	cell-cell junction cellular anatomical structure anchoring junction cell junction cell periphery plasma membrane membrane intracellular anatomical structure cytoplasm protein-containing complex intracellular organelle cytoskeleton organelle membraneless organelle cell-cell junction cellular anatomical structure anchoring junction cell junction cell periphery plasma membrane membrane intracellular anatomical structure cytoplasm protein-containing complex intracellular organelle cytoskeleton organelle membraneless organelle intracellular membraneless organelle extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B	IPR005225	Small GTP-binding domain	Domain
B	IPR020849	Small GTPase, Ras-type	Family
B	IPR001806	Small GTPase	Family
B	IPR038851	Ras-related protein Rap1	Family
A	IPR041791	Krev interaction trapped protein 1, FERM domain C-lobe	Domain
A	IPR000299	FERM domain	Domain
A	IPR014352	FERM/acyl-CoA-binding protein superfamily	Homologous Superfamily
A	IPR043058	KRIT, N-terminal NPxY motif-rich domain superfamily	Homologous Superfamily
A	IPR036770	Ankyrin repeat-containing domain superfamily	Homologous Superfamily
A	IPR019748	FERM central domain	Domain
A	IPR056485	KRIT1, ARM-repeats domain	Domain
A	IPR011993	PH-like domain superfamily	Homologous Superfamily
A	IPR002110	Ankyrin repeat	Repeat
A	IPR019749	Band 4.1 domain	Domain
A	IPR035963	FERM superfamily, second domain	Homologous Superfamily
A	IPR032022	KRIT, N-terminal NPxY motif-rich region	Domain
A	IPR051594	KRIT1/FRMD8	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	Pharos: P61224	Kabuki syndrome lung adenocarcinoma
A	Pharos: O00522	Hemangioma, Cavernous, Central Nervous System cerebral cavernous malformation 1 cerebrovascular disorder famililal cerebral cavernous malformations cavernous hemangioma cerebral cavernous malformation cerebrocostomandibular syndrome intellectual disability hereditary hemorrhagic telangiectasia

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.